| Author | Mainuddin, Md. |
| Call Number | AIT Thesis no. IR-93-01 |
| Subject(s) | Water, Underground--Thailand--Sukhothai
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master
of Engineering, School of Civil Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. IR-93-01 |
| Abstract | Water is one of the main limiting resource that influence on the crop area planning and
management decision in all irrigation project. In water resources systems the availability of
water supplies from the natural resources varies randomly in amount and is often not adequate
to meet the demand. Selection of a suitable crop plan to get the maximum social and economic
benefit under this limiting condition is a formidable task for engineers and planners. This study
deals with one such problem of a groundwater irrigation project in Thailand.
A monthwise crop area planning model is formulated for determining the optimal
cropping pattern and the groundwater abstraction requirement. Two objectives, maximization
of net economic benefit and maximization of irrigated area, those are often aspired to be
improved by both the irrigation authority and the individual farmers are considered in model
formulation. To match with uncertainty of resources availability, the model is solved for three
levels of reliability of resources (80%, 50% and 20%). Moreover, the operational reliability
of the tubewells are determined and the comparison of supply and demand for the past ten
years are carried out. The effect of certain level of deficit irrigation on the net benefit and
cropping intensity as well as on the yield of crops are also assessed by considering three levels
(no deficit, 25% deficit and 50% deficit) of water application to the crops. Optimal cropping
patterns are obtained for different alternative scenarios at all levels of reliability for
maximization of net benefit and irrigated area.
The result of crop planning model indicates that there is a conflict exists between the
two objectives. To minimize that conflict and to select the best alternative multiobjective
analysis is carried out by Analytic Hierarchy Process and Compromise programming
considering the preference of the decision makers. It is found that the net benefit obtained
from the project can be increased by 50% from the existing benefit and cropping intensity can
be increased to 150% from the existing 94%, even considering the lower availability of
resources by providing full irrigation to the crops. Recommendations is made for the best
alternative. |
| Year | 1994 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. IR-93-01 |
| Type | Thesis |
| School | School of Civil Engineering |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Irrigation Engineering and Management (IR) |
| Chairperson(s) | Gupta, Ashim Das |
| Examination Committee(s) | Onta, Pushpa Raj ;Loof, Rainer ;Kono, Yasuyuki
|
| Scholarship Donor(s) | The Royal Government of The Netherlands ; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1994 |